A northbound bus returns to the bus stop every 20 minutes. The southbound bus returns to the bus stop every 25 minutes. How long will it be before both of the buses are at the bus stop at the same time again

Question

Coleman

Mathematics

14 December, 05:48

A northbound bus returns to the bus stop every 20 minutes. The southbound bus returns to the bus stop every 25 minutes. How long will it be before both of the buses are at the bus stop at the same time again

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Answers (2)

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Bobby Hogan · Answer 1

100 minutes because

20,40,60,80,100,120

25,50,75,100,125

They have 100 in common. It will take the northbound bus 5 stops and the southbound bus 4 stops to be at the same bus stop

Kennedy Mahoney · Answer 2

They stop at the same time after 4 times for the southbound bus to return and five times for the northbound bus returns to the bus stop